Guidelines

2.1 Arrange for alternative controls

Handicapped persons have very different assumptions for controlling
computers. There are many different aids, for example:

mouse

switches

pointer screens

control panels

keyboards

scanners

It is important that software is designed with the different input devices in
mind. In addition to the various pointing equipment it should also be
possible to control programs by means of the keyboard (which will to a greater degree allow the
use of switches).